Friction stir processing (FSP) 2519-T87 aluminum plate results in enhanced ductility, 25% strain at fracture. However, the yield strength in the FSP zone drops to 175 MPa from �400 MPa. Actively cooling the plate during FSP increases the yield strength to 185 MPa and decreases ductility to 20% strain at fracture. Thick bending of a plate of the alloy was demonstrated after the surface was subje...

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 4.8 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249 6.5 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 5.2 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218 5.7 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 5.2 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 5.9 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 7.4 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 7.1 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 5.1 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 5.3 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 5.6 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 6.7 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 6.7 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 7.8 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 8.6 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 7.6 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 8.3 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 7.8 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 7.2 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 7.3 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,195 6.7 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,222 6.9 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,376 7.7 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,266 7.1 20 to 24 years . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218 5.7 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 5.2 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 6.8 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 6.1 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 4.8 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 5.9 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249 7.0 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 6.4 20 to 24 years . . . . . . . . . . . . . . . . . . . . ....

1 Department of Health and Social Security. Disinfection of endoscopes potentially contaminated by mycobacterium species. Safety Infornation Bulletin 1986;28. 2 Working Party of British Society of Gastroenterologists. Cleaning and disinfection of equipment for gastrointestinal flexible endoscopy. Interim recommendations. Gut 1988;29:1134-51. 3 Centers for Disease Control. Recommendations for pr...